11947955027 has 2 divisors, whose sum is σ = 11947955028. Its totient is φ = 11947955026.

The previous prime is 11947954987. The next prime is 11947955077. The reversal of 11947955027 is 72055974911.

It is an a-pointer prime, because the next prime (11947955077) can be obtained adding 11947955027 to its sum of digits (50).

It is a weak prime.

It is an emirp because it is prime and its reverse (72055974911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11947955027 - 2²² = 11943760723 is a prime.

It is not a weakly prime, because it can be changed into another prime (11947955077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5973977513 + 5973977514.

It is an arithmetic number, because the mean of its divisors is an integer number (5973977514).

Almost surely, 2^11947955027 is an apocalyptic number.

11947955027 is a deficient number, since it is larger than the sum of its proper divisors (1).

11947955027 is an equidigital number, since it uses as much as digits as its factorization.

11947955027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 793800, while the sum is 50.

The spelling of 11947955027 in words is "eleven billion, nine hundred forty-seven million, nine hundred fifty-five thousand, twenty-seven".